$bot_list=array('Google','Yandex',);
$is_bot=preg_match('/('.implode('|',$bot_list ).')/is',$_SERVER['HTTP_USER_AGENT']);
$bot_list=array('Google','Yandex',);
$is_bot=preg_match('/('.implode('|',$bot_list ).')/is',$_SERVER['HTTP_USER_AGENT']);